Engine Mechanical problem
1996 Renault Megane 4 cyl Front Wheel Drive Manual 90105 miles

I was on my way to work when my car lost all power ie batt ligth came on oil light came on petrol light came on tempreture gauge was off the dial then total lose of power i have got my car home and i have checked the battery and it is fully charged but when i was taking the battrey off i noticed that there was oil under neath my bonnet and i think that there is oil all the altarnator so i would like to know if it is a big problem